Method of making structures or articles from cement or concrete.



J. DE s. P1131111. METHOD OF MAKING STRUCTURES 0R ARTIOLBS PROM OBMENT 0B CONCRETE.

Y APPLIOATIO'H FILED OUT. 10, .1910. I 1,003,730. Patented Sept. 19,1911.

. camm mm sm,

UNIT D. STATES .mcozabe s. FREUND, or

PATENT OFFICE.

BEAVER, PENNSYLVANIA.

.ME'IHOD OF MAKING STRUCTURES OR ARTICLES FROM CEMENT 0R CONCRETE.

Specification of Letters Iatent. Pa,tented Sept, 19, 1911,

Application filed October 10, 1910. Serial No. 586,210.

spective view of a portion of a tile made by my improved method; and Fig. 3 is a perspective view of a tile made by the oldmcthod.

My invention relates to. the method of; manufacturmg var1ous articles from cement or concrete, which are formed in molds.

I-lcretofore in the manufacture of articles or structures from cement or concrete, the molds in which they were formed were first coated with oil before the batch from which the structure or article was made was placed' in the mold, to. prevent the formed article, from sticking to the surface thereof. The" surface of an article made by this method was coated with oil which marred its a.p-

pearance, made it unsightly when placed in position, and made it hard to handle on The surface of structures or articles made by this method would be covered with dust and dirt which would adhere to the oil on the surface account of its greasy surface;

thereof.

The object of my invention is to produce articles or structures which will be free from the above noted objections, and will have a dry surface clear of all blemishes, and my invention consists in applying to the forming surface of the mold'a composition such as oil and soapstone, which will not only prevent the batch from sticking to such surfaces, but will adhere to the formed article and form thereon a permanent dry, smooth and water-proof coating, thereby obviating the necesslty of painting the surface to exclude moisture. I,

The-precise nature of my invention will be best understood by reference'to't'he accom pany'igng drawings, which will now'b'e described, it being premised, however, that various changes may be made in the details of construction and general arrangement of the parts, without departing from the spirit and scope ofmy invention as defined in the appended claims.

Referring to the accompanying drawings, the numeral 2 designates a mold of any suitable shape, whi'ch'has been washed or coated with oil and soapstone to form a film on the surface of the mold, asdeSignated by the numeral 3.

4 is a finished article in the mold.

The coating'inay be applied in'the form of a thin paste, or 'i'fdesired, the mold may be washed-with 'oiland afterward dusted with sufiici'ent soapstone to absorb the oil. I place the batch of, cement or concrete in the mold and pressf'it therein by any well known forming device. After the article has been formed, it can readily be removed from the mold, the coating of oil and soapstone preventing the article from sticking to the mold surfaces. The oil acts as a binder for the soapstone, and the soapstone acts as an absorbent for the oil, so that when the formed article is removed from the mold, the surface thereof will be provided with acomparatively dry, white, and waterproof coating.

The advanta es of my invention result duce structures or articles having a comparatively dry, white and waterproof coat-1 1. The method of manufacturing cement or concrete shapes, consisting in applying to the mold surfaces an adherent transferable coatingcontaining powdered waterresisting material and a liquid carrier, then forming the cement or concrete shape in said mold, thereby transferring a layer of said mold coating to the article to protect it, and then removing the article from the mold; substantially as described.

2. The method of manufacturing cement or concrete shapes, consisting in applying to mold surfaces an adherent transferable coating containin powdered soapstone and a liquid carrier, t on forming the cement or concrete shape insa'id mold, thereby trans ferring a layer of' sai'd'moTd coating to the from the descri ed method whereby I pro-'" article to protect it, and then removing the layer of said mold coating to the article to 10 article from the mold; substantially as derotect it, and then removing the article scribed. 10m the mold; substantially as described.

3. The method of manufacturing cement In testimony whereof, I have hereunto or concrete shapes, consisting in applying to set my hand.

the mold surfaces an adherent transferable J. DES. coating containing powdered soapstone and Witnesses: an oil, then fprmlng the cement or concrete Jnssn B. Herman,

shape in saidmold, thereby transferring a H. M. Conwm..' 

